|Table of Contents|

Analytical and experimental study on calculation for transverse stress of bottom slab of PC box-girder(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2011年06期
Page:
43-49
Research Field:
Publishing date:
2011-12-20

Info

Title:
Analytical and experimental study on calculation for transverse stress of bottom slab of PC box-girder
Author(s):
DING Yong;  ZHAO Qi-lin;  JIANG Ke-bin
Engineer Institute of Engineering Corps, PLA University of Science and Technology, Nanjing 210007, Jiangsu, China
Keywords:
bridge engineering;  box-girder;  varying-depth section;  elastic-supporting frame method;  finite element method;  field test
PACS:
U441.5
DOI:
-
Abstract:
In order to deal with the problem that it is difficult to calculate the transverse stress of bottom slab of closure segment of PC box-girder with varying-depth section accurately, a formula to compute the radial force resulted from the curvilinear location of closure cables in bottom slab was deduced, and a new method was developed based on elastic-supporting frame method(EFM)and rigid-supporting frame method(RFM). The elastic-supporting rigidity equals to the tensile rigidity of the web approximately in this new method which is called approximate elastic-supporting half frame method(AEHFM). Subsequently, the field test of transverse strain of bottom slab of closure segment of a PC box-girder bridge with single box and multi-cell was conducted, and 3D finite element simulation was performed. The results obtained from analytical method, test and finite element simulation show a good agreement which verify the analytical method is feasible. 1 tab, 10 figs, 12 refs.

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Last Update: 2011-12-20